FROM FOREST TO FABRIC: NATURAL DYEING WITH TEAK WOOD EXTRACT (Tectona Grandis) ON TRADITIONAL YARNS
Authors: ISMADI AND SARTONO, DEDY
Abstract: This study evaluates the potential of teak wood extract (Tectona grandis) as a natural dye for traditional woven yarns by comparing the effectiveness of different fixation techniques in enhancing color retention and stability. A spectrophotometric analysis was conducted to measure lightness (L*), red-green shift (a*), and yellow-blue shift (b*). Four fixatives - Aluminum Sulphate (Al2(SO4)3), Natrium Bicarbonate (NaHCO3), Calcium Carbonate (CaCO3), and Ferro Sulphate (FeSO4)—were tested to assess their impact on color transformation. The results indicate that Ferro Sulphate induced the most intense color transformation, producing deeper and darker hues, while Aluminum Sulphate yielded the most uniform and stable coloration. Calcium Carbonate enhanced lightness, whereas Natrium Bicarbonate resulted in moderate color absorption. These findings confirm the viability of teak wood extract as a sustainable alternative to synthetic dyes, supporting eco-friendly textile dyeing practices. Furthermore, this study provides scientific insights into fixation techniques, offering practical applications for both artisans and the textile industry.
Keywords: Natural dye; Teak wood extract; Color fastness; Sustainability; Fixation techniques.
Pages: 3-12
OPTIMIZING THE DYEABILITY OF POLYESTER FABRICS WITH DISPERSE DYES USING AN ORTHOGONAL DESIGN
Authors: LUU, THI THO AND NGUYEN, TUAN ANH2
Abstract: This study explores the combined effects of dye concentration, dyeing time, and acid concentration on the color strength (K/S value) of polyester fabrics dyed with Disperse Scarlet GS200 (DSG). The Taguchi L25 orthogonal array design was employed to optimize the dyeing process while reducing experimental effort and material usage. Color strength and fastness properties were evaluated through spectrophotometric measurements and analyzed using Minitab statistical software. Among the three variables, dyeing time was found to have the most significant influence on the K/S values, followed by dye concentration, whereas acid concentration had a relatively minor effect. These results highlight the importance of controlling processing time to achieve optimal coloration. In addition to color strength analysis, FTIR spectroscopy was used to examine the interaction mechanisms between DSG dyes and polyester fibers. The results suggested the presence of physical bonding, such as Van der Waals forces or hydrogen bonding. Vapor permeability tests further supported the dye–fiber interaction and fabric surface changes after dyeing. Overall, the findings contribute to improving dyeing efficiency and fabric quality while supporting environmentally conscious practices in textile manufacturing by identifying optimal dyeing conditions with reduced chemical input and energy usage.
Keywords: Polyester Fabric; Disperse Dyes (DSG); Taguchi Method; Orthogonal Design; Color Strength (K/S).
Pages: 13-20
INFLUENCE OF DYEING TECHNOLOGICAL CONDITIONS ON THE COLOR CHARACTERISTICS AND ANTIBACTERIAL PROPERTIES OF COTTON-POLYESTER TEXTILES
Authors: HARANINA, OLHA; REDKO, YANA; VARDANIAN, ANNA; ROMANIUK, IEVGENIIA; LISHCHUK, VIKTOR AND PERVAIA, NATALIIA
Abstract: The article is devoted to establishing the influence of an intensifier on color characteristics, color fastness indicators, and antibacterial properties of textile materials. The proposed method confirms the expediency of using the selected intensifier when dyeing cotton-polyester textile materials. Concentrations of the intensifier during their treatment were determined. The influence of the intensifier on the color intensity and its resistance to physicochemical factors was established. The antibacterial activity of the treated samples was confirmed.
Keywords: Intensifier; Triclosan; Dyeing; Cotton-polyester Textile; Antibacterial Properties.
Pages: 21-27
PRODUCTION OF NANOFIBERS USING ELECTROSPINNING WITH THE USE OF METAL LAMS
Authors: KNÍŽEK, ROMAN; KNÍŽEK, ONDŘEJ; FRIDRICHOVÁ, LUDMILA; TUNÁK MAROŠ AND LUBASOVÁ, DANIELA
Abstract: This study presents a novel design for an industrial electrospinning system aimed at the large-scale production of nanofibrous materials. The proposed system utilizes electrospinning of a polymer solution or melt within a high-intensity electric field generated between the collection electrodes and the polymer solution or melt deposited on the spinning apparatus. The developed machine is designed to achieve performance comparable to or exceeding that of existing electrospinning devices. In its basic configuration, the system operates with a single spinning head and a single collecting electrode. However, the design allows for scalability, accommodating up to six spinning heads and six corresponding collecting electrodes, thereby significantly enhancing production efficiency. Furthermore, the modular design enables flexible operation, allowing for the selective use of spinning heads to adapt to varying production demands. This adaptability, along with the capacity for customization, distinguishes the proposed system from existing technologies, making it suitable for both industrial applications and research-oriented modifications.
Keywords: Nanofibers; Needle-less; Electrospinning; Production
Pages: 28-37